diff --git a/python_scripts/add_trees_to_open_street_map/add_trees.py b/python_scripts/add_trees_to_open_street_map/add_trees.py
index 31e445dbba45cc0d07a97181ddf9c0f7e1ae2b62..070b449ee2d856381f27f05f995680231926074a 100644
--- a/python_scripts/add_trees_to_open_street_map/add_trees.py
+++ b/python_scripts/add_trees_to_open_street_map/add_trees.py
@@ -262,6 +262,7 @@ def export_shapefile(bounds: Bounds, forest: Forest, epsg_id: int) -> None:
         'x': t.x, 'y': t.y,
         'Bezeichnun': t.description, 'Baumart': t.type,
         'Baumhöhe': t.height, 'Kronenbrei': t.diameter,
+        # FIXME: Stammumfan: trunk_diameter is wrong
         'Stammumfan': t.trunk_diameter, 'Quelle': t.source
     }
         for t in forest]